Question

A hole, 5x3, is cut out of the center of a sheet metal 9" square. The area of the remaining metal is

Answer 1

66 square inches

Explanation:

First we have to find out the area of the original piece of metal. Since it is 9 by 9, we can multiply to find that it is 81 square inches. If we remove a 5 by 3 piece, which is equal to 15 square inches, we can subtract 15 from 81 to get the answer - the remaining metal is 66 square inches